Bayliss MK7 Triple Spring Solar Vent Opener – Everyday Opening Greenhouse Hardware Perfect for switching between hoses

Perfect for switching between hoses

Perfect for gardeners looking to improve water quality for healthier soil and foliage

Vari-Shade Concentrate is a great way to give them just the right amount of shade

so your plants stay comfortable

or in our Mount Vernon

Bayliss MK7 Triple Spring Solar Vent Opener – Everyday Opening Greenhouse Hardware Perfect for switching between hosesKeeping your greenhouse at just the right temperature can be a chore, but this Bayliss Triple Spring Solar Vent Opener does it for you! As our most popular choice, this device opens and closes based on temperature changes, so your plants get fresh air without you needing to lift a finger. Plus, it runs on solar powerno wires or batteries needed.